-84.22% is the change from 545 to 86
Calculation steps:
[( 86 - 545 ) ÷ 545] x 100 = -84.22%
Formula
Percentage change = [(86 - 545) / 545] x 100
Subtract the new number by the original number
86 - 545 = -459
-459 ÷ 545 = -0.8422018348623853
-0.8422018348623853 x 100 = -84.22%