-13.53% is the change from 621 to 537
Calculation steps:
[( 537 - 621 ) ÷ 621] x 100 = -13.53%
Formula
Percentage change = [(537 - 621) / 621] x 100
Subtract the new number by the original number
537 - 621 = -84
-84 ÷ 621 = -0.13526570048309178
-0.13526570048309178 x 100 = -13.53%