147.94% is the change from 340 to 843
Calculation steps:
[( 843 - 340 ) ÷ 340] x 100 = 147.94%
Formula
Percentage change = [(843 - 340) / 340] x 100
Subtract the new number by the original number
843 - 340 = 503
503 ÷ 340 = 1.4794117647058824
1.4794117647058824 x 100 = 147.94%