-31.69% is the change from 508 to 347
Calculation steps:
[( 347 - 508 ) ÷ 508] x 100 = -31.69%
Formula
Percentage change = [(347 - 508) / 508] x 100
Subtract the new number by the original number
347 - 508 = -161
-161 ÷ 508 = -0.3169291338582677
-0.3169291338582677 x 100 = -31.69%