-56.91% is the change from 499 to 215
Calculation steps:
[( 215 - 499 ) ÷ 499] x 100 = -56.91%
Formula
Percentage change = [(215 - 499) / 499] x 100
Subtract the new number by the original number
215 - 499 = -284
-284 ÷ 499 = -0.5691382765531062
-0.5691382765531062 x 100 = -56.91%