-84.57% is the change from 499 to 77
Calculation steps:
[( 77 - 499 ) ÷ 499] x 100 = -84.57%
Formula
Percentage change = [(77 - 499) / 499] x 100
Subtract the new number by the original number
77 - 499 = -422
-422 ÷ 499 = -0.845691382765531
-0.845691382765531 x 100 = -84.57%