-22.19% is the change from 311 to 242
Calculation steps:
[( 242 - 311 ) ÷ 311] x 100 = -22.19%
Formula
Percentage change = [(242 - 311) / 311] x 100
Subtract the new number by the original number
242 - 311 = -69
-69 ÷ 311 = -0.22186495176848875
-0.22186495176848875 x 100 = -22.19%