-64.96% is the change from 391 to 137
Calculation steps:
[( 137 - 391 ) ÷ 391] x 100 = -64.96%
Formula
Percentage change = [(137 - 391) / 391] x 100
Subtract the new number by the original number
137 - 391 = -254
-254 ÷ 391 = -0.649616368286445
-0.649616368286445 x 100 = -64.96%