-56.59% is the change from 311 to 135
Calculation steps:
[( 135 - 311 ) ÷ 311] x 100 = -56.59%
Formula
Percentage change = [(135 - 311) / 311] x 100
Subtract the new number by the original number
135 - 311 = -176
-176 ÷ 311 = -0.5659163987138264
-0.5659163987138264 x 100 = -56.59%