-40.39% is the change from 874 to 521
Calculation steps:
[( 521 - 874 ) ÷ 874] x 100 = -40.39%
Formula
Percentage change = [(521 - 874) / 874] x 100
Subtract the new number by the original number
521 - 874 = -353
-353 ÷ 874 = -0.40389016018306634
-0.40389016018306634 x 100 = -40.39%