-61.28% is the change from 390 to 151
Calculation steps:
[( 151 - 390 ) ÷ 390] x 100 = -61.28%
Formula
Percentage change = [(151 - 390) / 390] x 100
Subtract the new number by the original number
151 - 390 = -239
-239 ÷ 390 = -0.6128205128205129
-0.6128205128205129 x 100 = -61.28%