-20.9% is the change from 311 to 246
Calculation steps:
[( 246 - 311 ) ÷ 311] x 100 = -20.9%
Formula
Percentage change = [(246 - 311) / 311] x 100
Subtract the new number by the original number
246 - 311 = -65
-65 ÷ 311 = -0.2090032154340836
-0.2090032154340836 x 100 = -20.9%