-84.63% is the change from 501 to 77
Calculation steps:
[( 77 - 501 ) ÷ 501] x 100 = -84.63%
Formula
Percentage change = [(77 - 501) / 501] x 100
Subtract the new number by the original number
77 - 501 = -424
-424 ÷ 501 = -0.846307385229541
-0.846307385229541 x 100 = -84.63%