-70.19% is the change from 312 to 93
Calculation steps:
[( 93 - 312 ) ÷ 312] x 100 = -70.19%
Formula
Percentage change = [(93 - 312) / 312] x 100
Subtract the new number by the original number
93 - 312 = -219
-219 ÷ 312 = -0.7019230769230769
-0.7019230769230769 x 100 = -70.19%