-38.72% is the change from 501 to 307
Calculation steps:
[( 307 - 501 ) ÷ 501] x 100 = -38.72%
Formula
Percentage change = [(307 - 501) / 501] x 100
Subtract the new number by the original number
307 - 501 = -194
-194 ÷ 501 = -0.3872255489021956
-0.3872255489021956 x 100 = -38.72%