142.2% is the change from 391 to 947
Calculation steps:
[( 947 - 391 ) ÷ 391] x 100 = 142.2%
Formula
Percentage change = [(947 - 391) / 391] x 100
Subtract the new number by the original number
947 - 391 = 556
556 ÷ 391 = 1.421994884910486
1.421994884910486 x 100 = 142.2%