-67.62% is the change from 315 to 102
Calculation steps:
[( 102 - 315 ) ÷ 315] x 100 = -67.62%
Formula
Percentage change = [(102 - 315) / 315] x 100
Subtract the new number by the original number
102 - 315 = -213
-213 ÷ 315 = -0.6761904761904762
-0.6761904761904762 x 100 = -67.62%