-65.9% is the change from 390 to 133
Calculation steps:
[( 133 - 390 ) ÷ 390] x 100 = -65.9%
Formula
Percentage change = [(133 - 390) / 390] x 100
Subtract the new number by the original number
133 - 390 = -257
-257 ÷ 390 = -0.658974358974359
-0.658974358974359 x 100 = -65.9%