-93.59% is the change from 312 to 20
Calculation steps:
[( 20 - 312 ) ÷ 312] x 100 = -93.59%
Formula
Percentage change = [(20 - 312) / 312] x 100
Subtract the new number by the original number
20 - 312 = -292
-292 ÷ 312 = -0.9358974358974359
-0.9358974358974359 x 100 = -93.59%