-61.38% is the change from 391 to 151
Calculation steps:
[( 151 - 391 ) ÷ 391] x 100 = -61.38%
Formula
Percentage change = [(151 - 391) / 391] x 100
Subtract the new number by the original number
151 - 391 = -240
-240 ÷ 391 = -0.6138107416879796
-0.6138107416879796 x 100 = -61.38%