-53.38% is the change from 311 to 145
Calculation steps:
[( 145 - 311 ) ÷ 311] x 100 = -53.38%
Formula
Percentage change = [(145 - 311) / 311] x 100
Subtract the new number by the original number
145 - 311 = -166
-166 ÷ 311 = -0.5337620578778135
-0.5337620578778135 x 100 = -53.38%