-67% is the change from 397 to 131
Calculation steps:
[( 131 - 397 ) ÷ 397] x 100 = -67%
Formula
Percentage change = [(131 - 397) / 397] x 100
Subtract the new number by the original number
131 - 397 = -266
-266 ÷ 397 = -0.6700251889168766
-0.6700251889168766 x 100 = -67%