771.79% is the change from 39 to 340
Calculation steps:
[( 340 - 39 ) ÷ 39] x 100 = 771.79%
Formula
Percentage change = [(340 - 39) / 39] x 100
Subtract the new number by the original number
340 - 39 = 301
301 ÷ 39 = 7.717948717948718
7.717948717948718 x 100 = 771.79%