-67.4% is the change from 957 to 312
Calculation steps:
[( 312 - 957 ) ÷ 957] x 100 = -67.4%
Formula
Percentage change = [(312 - 957) / 957] x 100
Subtract the new number by the original number
312 - 957 = -645
-645 ÷ 957 = -0.6739811912225705
-0.6739811912225705 x 100 = -67.4%