-68.81% is the change from 311 to 97
Calculation steps:
[( 97 - 311 ) ÷ 311] x 100 = -68.81%
Formula
Percentage change = [(97 - 311) / 311] x 100
Subtract the new number by the original number
97 - 311 = -214
-214 ÷ 311 = -0.6881028938906752
-0.6881028938906752 x 100 = -68.81%