-78.41% is the change from 315 to 68
Calculation steps:
[( 68 - 315 ) ÷ 315] x 100 = -78.41%
Formula
Percentage change = [(68 - 315) / 315] x 100
Subtract the new number by the original number
68 - 315 = -247
-247 ÷ 315 = -0.7841269841269841
-0.7841269841269841 x 100 = -78.41%