-85.79% is the change from 542 to 77
Calculation steps:
[( 77 - 542 ) ÷ 542] x 100 = -85.79%
Formula
Percentage change = [(77 - 542) / 542] x 100
Subtract the new number by the original number
77 - 542 = -465
-465 ÷ 542 = -0.8579335793357934
-0.8579335793357934 x 100 = -85.79%