-51.21% is the change from 621 to 303
Calculation steps:
[( 303 - 621 ) ÷ 621] x 100 = -51.21%
Formula
Percentage change = [(303 - 621) / 621] x 100
Subtract the new number by the original number
303 - 621 = -318
-318 ÷ 621 = -0.5120772946859904
-0.5120772946859904 x 100 = -51.21%