-67.59% is the change from 972 to 315
Calculation steps:
[( 315 - 972 ) ÷ 972] x 100 = -67.59%
Formula
Percentage change = [(315 - 972) / 972] x 100
Subtract the new number by the original number
315 - 972 = -657
-657 ÷ 972 = -0.6759259259259259
-0.6759259259259259 x 100 = -67.59%