-34.21% is the change from 947 to 623
Calculation steps:
[( 623 - 947 ) ÷ 947] x 100 = -34.21%
Formula
Percentage change = [(623 - 947) / 947] x 100
Subtract the new number by the original number
623 - 947 = -324
-324 ÷ 947 = -0.34213305174234426
-0.34213305174234426 x 100 = -34.21%