-72.67% is the change from 311 to 85
Calculation steps:
[( 85 - 311 ) ÷ 311] x 100 = -72.67%
Formula
Percentage change = [(85 - 311) / 311] x 100
Subtract the new number by the original number
85 - 311 = -226
-226 ÷ 311 = -0.7266881028938906
-0.7266881028938906 x 100 = -72.67%