-67.58% is the change from 947 to 307
Calculation steps:
[( 307 - 947 ) ÷ 947] x 100 = -67.58%
Formula
Percentage change = [(307 - 947) / 947] x 100
Subtract the new number by the original number
307 - 947 = -640
-640 ÷ 947 = -0.675818373812038
-0.675818373812038 x 100 = -67.58%