-56.69% is the change from 508 to 220
Calculation steps:
[( 220 - 508 ) ÷ 508] x 100 = -56.69%
Formula
Percentage change = [(220 - 508) / 508] x 100
Subtract the new number by the original number
220 - 508 = -288
-288 ÷ 508 = -0.5669291338582677
-0.5669291338582677 x 100 = -56.69%