-85.1% is the change from 208 to 31
Calculation steps:
[( 31 - 208 ) ÷ 208] x 100 = -85.1%
Formula
Percentage change = [(31 - 208) / 208] x 100
Subtract the new number by the original number
31 - 208 = -177
-177 ÷ 208 = -0.8509615384615384
-0.8509615384615384 x 100 = -85.1%