-34.53% is the change from 947 to 620
Calculation steps:
[( 620 - 947 ) ÷ 947] x 100 = -34.53%
Formula
Percentage change = [(620 - 947) / 947] x 100
Subtract the new number by the original number
620 - 947 = -327
-327 ÷ 947 = -0.3453009503695882
-0.3453009503695882 x 100 = -34.53%