-65.73% is the change from 391 to 134
Calculation steps:
[( 134 - 391 ) ÷ 391] x 100 = -65.73%
Formula
Percentage change = [(134 - 391) / 391] x 100
Subtract the new number by the original number
134 - 391 = -257
-257 ÷ 391 = -0.6572890025575447
-0.6572890025575447 x 100 = -65.73%