-4.02% is the change from 522 to 501
Calculation steps:
[( 501 - 522 ) ÷ 522] x 100 = -4.02%
Formula
Percentage change = [(501 - 522) / 522] x 100
Subtract the new number by the original number
501 - 522 = -21
-21 ÷ 522 = -0.040229885057471264
-0.040229885057471264 x 100 = -4.02%