-71.7% is the change from 311 to 88
Calculation steps:
[( 88 - 311 ) ÷ 311] x 100 = -71.7%
Formula
Percentage change = [(88 - 311) / 311] x 100
Subtract the new number by the original number
88 - 311 = -223
-223 ÷ 311 = -0.7170418006430869
-0.7170418006430869 x 100 = -71.7%