-53.53% is the change from 312 to 145
Calculation steps:
[( 145 - 312 ) ÷ 312] x 100 = -53.53%
Formula
Percentage change = [(145 - 312) / 312] x 100
Subtract the new number by the original number
145 - 312 = -167
-167 ÷ 312 = -0.5352564102564102
-0.5352564102564102 x 100 = -53.53%