-82.13% is the change from 431 to 77
Calculation steps:
[( 77 - 431 ) ÷ 431] x 100 = -82.13%
Formula
Percentage change = [(77 - 431) / 431] x 100
Subtract the new number by the original number
77 - 431 = -354
-354 ÷ 431 = -0.8213457076566125
-0.8213457076566125 x 100 = -82.13%