-53.78% is the change from 621 to 287
Calculation steps:
[( 287 - 621 ) ÷ 621] x 100 = -53.78%
Formula
Percentage change = [(287 - 621) / 621] x 100
Subtract the new number by the original number
287 - 621 = -334
-334 ÷ 621 = -0.537842190016103
-0.537842190016103 x 100 = -53.78%