-72.35% is the change from 311 to 86
Calculation steps:
[( 86 - 311 ) ÷ 311] x 100 = -72.35%
Formula
Percentage change = [(86 - 311) / 311] x 100
Subtract the new number by the original number
86 - 311 = -225
-225 ÷ 311 = -0.7234726688102894
-0.7234726688102894 x 100 = -72.35%