-68.67% is the change from 316 to 99
Calculation steps:
[( 99 - 316 ) ÷ 316] x 100 = -68.67%
Formula
Percentage change = [(99 - 316) / 316] x 100
Subtract the new number by the original number
99 - 316 = -217
-217 ÷ 316 = -0.6867088607594937
-0.6867088607594937 x 100 = -68.67%