-85.87% is the change from 545 to 77
Calculation steps:
[( 77 - 545 ) ÷ 545] x 100 = -85.87%
Formula
Percentage change = [(77 - 545) / 545] x 100
Subtract the new number by the original number
77 - 545 = -468
-468 ÷ 545 = -0.8587155963302753
-0.8587155963302753 x 100 = -85.87%