-77.8% is the change from 500 to 111
Calculation steps:
[( 111 - 500 ) ÷ 500] x 100 = -77.8%
Formula
Percentage change = [(111 - 500) / 500] x 100
Subtract the new number by the original number
111 - 500 = -389
-389 ÷ 500 = -0.778
-0.778 x 100 = -77.8%