-31.94% is the change from 501 to 341
Calculation steps:
[( 341 - 501 ) ÷ 501] x 100 = -31.94%
Formula
Percentage change = [(341 - 501) / 501] x 100
Subtract the new number by the original number
341 - 501 = -160
-160 ÷ 501 = -0.3193612774451098
-0.3193612774451098 x 100 = -31.94%