-62.8% is the change from 500 to 186
Calculation steps:
[( 186 - 500 ) ÷ 500] x 100 = -62.8%
Formula
Percentage change = [(186 - 500) / 500] x 100
Subtract the new number by the original number
186 - 500 = -314
-314 ÷ 500 = -0.628
-0.628 x 100 = -62.8%