-87.46% is the change from 311 to 39
Calculation steps:
[( 39 - 311 ) ÷ 311] x 100 = -87.46%
Formula
Percentage change = [(39 - 311) / 311] x 100
Subtract the new number by the original number
39 - 311 = -272
-272 ÷ 311 = -0.8745980707395499
-0.8745980707395499 x 100 = -87.46%