-31.14% is the change from 501 to 345
Calculation steps:
[( 345 - 501 ) ÷ 501] x 100 = -31.14%
Formula
Percentage change = [(345 - 501) / 501] x 100
Subtract the new number by the original number
345 - 501 = -156
-156 ÷ 501 = -0.31137724550898205
-0.31137724550898205 x 100 = -31.14%