-18.97% is the change from 311 to 252
Calculation steps:
[( 252 - 311 ) ÷ 311] x 100 = -18.97%
Formula
Percentage change = [(252 - 311) / 311] x 100
Subtract the new number by the original number
252 - 311 = -59
-59 ÷ 311 = -0.18971061093247588
-0.18971061093247588 x 100 = -18.97%