-20.11% is the change from 527 to 421
Calculation steps:
[( 421 - 527 ) ÷ 527] x 100 = -20.11%
Formula
Percentage change = [(421 - 527) / 527] x 100
Subtract the new number by the original number
421 - 527 = -106
-106 ÷ 527 = -0.20113851992409867
-0.20113851992409867 x 100 = -20.11%