-33.47% is the change from 947 to 630
Calculation steps:
[( 630 - 947 ) ÷ 947] x 100 = -33.47%
Formula
Percentage change = [(630 - 947) / 947] x 100
Subtract the new number by the original number
630 - 947 = -317
-317 ÷ 947 = -0.3347412882787751
-0.3347412882787751 x 100 = -33.47%