This mostly happens when the OKR is measured by % completed and integrated with Google Sheets for progress updates.
While using the Google Sheets integration, it is recommended to use KPI (metric based) and not percentage completed (Measured as a goal towards 100% completion). When you use percentage to calculate progress of an OKR, the integration will consider the cell value as a percentage and not as an actual number.
Example: If a cell's value is $201.00, it is considered as 200% by the integration and the progress is marked as 200% against the OKR.
In case you like to use Google Sheets integration to track % completion of OKRs, it is important to ensure that the connected cell's value is also % and not a metric.