-62.5% is the change from 312 to 117
Calculation steps:
[( 117 - 312 ) ÷ 312] x 100 = -62.5%
Formula
Percentage change = [(117 - 312) / 312] x 100
Subtract the new number by the original number
117 - 312 = -195
-195 ÷ 312 = -0.625
-0.625 x 100 = -62.5%