-22.84% is the change from 521 to 402
Calculation steps:
[( 402 - 521 ) ÷ 521] x 100 = -22.84%
Formula
Percentage change = [(402 - 521) / 521] x 100
Subtract the new number by the original number
402 - 521 = -119
-119 ÷ 521 = -0.22840690978886757
-0.22840690978886757 x 100 = -22.84%