-30.62% is the change from 947 to 657
Calculation steps:
[( 657 - 947 ) ÷ 947] x 100 = -30.62%
Formula
Percentage change = [(657 - 947) / 947] x 100
Subtract the new number by the original number
657 - 947 = -290
-290 ÷ 947 = -0.30623020063357975
-0.30623020063357975 x 100 = -30.62%