-67.31% is the change from 312 to 102
Calculation steps:
[( 102 - 312 ) ÷ 312] x 100 = -67.31%
Formula
Percentage change = [(102 - 312) / 312] x 100
Subtract the new number by the original number
102 - 312 = -210
-210 ÷ 312 = -0.6730769230769231
-0.6730769230769231 x 100 = -67.31%