-68.91% is the change from 521 to 162
Calculation steps:
[( 162 - 521 ) ÷ 521] x 100 = -68.91%
Formula
Percentage change = [(162 - 521) / 521] x 100
Subtract the new number by the original number
162 - 521 = -359
-359 ÷ 521 = -0.6890595009596929
-0.6890595009596929 x 100 = -68.91%