-65.47% is the change from 391 to 135
Calculation steps:
[( 135 - 391 ) ÷ 391] x 100 = -65.47%
Formula
Percentage change = [(135 - 391) / 391] x 100
Subtract the new number by the original number
135 - 391 = -256
-256 ÷ 391 = -0.6547314578005116
-0.6547314578005116 x 100 = -65.47%