-67.95% is the change from 312 to 100
Calculation steps:
[( 100 - 312 ) ÷ 312] x 100 = -67.95%
Formula
Percentage change = [(100 - 312) / 312] x 100
Subtract the new number by the original number
100 - 312 = -212
-212 ÷ 312 = -0.6794871794871795
-0.6794871794871795 x 100 = -67.95%