-58.8% is the change from 500 to 206
Calculation steps:
[( 206 - 500 ) ÷ 500] x 100 = -58.8%
Formula
Percentage change = [(206 - 500) / 500] x 100
Subtract the new number by the original number
206 - 500 = -294
-294 ÷ 500 = -0.588
-0.588 x 100 = -58.8%