-56.73% is the change from 312 to 135
Calculation steps:
[( 135 - 312 ) ÷ 312] x 100 = -56.73%
Formula
Percentage change = [(135 - 312) / 312] x 100
Subtract the new number by the original number
135 - 312 = -177
-177 ÷ 312 = -0.5673076923076923
-0.5673076923076923 x 100 = -56.73%