-87.82% is the change from 501 to 61
Calculation steps:
[( 61 - 501 ) ÷ 501] x 100 = -87.82%
Formula
Percentage change = [(61 - 501) / 501] x 100
Subtract the new number by the original number
61 - 501 = -440
-440 ÷ 501 = -0.8782435129740519
-0.8782435129740519 x 100 = -87.82%