-67.48% is the change from 947 to 308
Calculation steps:
[( 308 - 947 ) ÷ 947] x 100 = -67.48%
Formula
Percentage change = [(308 - 947) / 947] x 100
Subtract the new number by the original number
308 - 947 = -639
-639 ÷ 947 = -0.6747624076029567
-0.6747624076029567 x 100 = -67.48%