-67.9% is the change from 972 to 312
Calculation steps:
[( 312 - 972 ) ÷ 972] x 100 = -67.9%
Formula
Percentage change = [(312 - 972) / 972] x 100
Subtract the new number by the original number
312 - 972 = -660
-660 ÷ 972 = -0.6790123456790124
-0.6790123456790124 x 100 = -67.9%