-64.32% is the change from 199 to 71
Calculation steps:
[( 71 - 199 ) ÷ 199] x 100 = -64.32%
Formula
Percentage change = [(71 - 199) / 199] x 100
Subtract the new number by the original number
71 - 199 = -128
-128 ÷ 199 = -0.6432160804020101
-0.6432160804020101 x 100 = -64.32%