80.75% is the change from 426 to 770
Calculation steps:
[( 770 - 426 ) ÷ 426] x 100 = 80.75%
Formula
Percentage change = [(770 - 426) / 426] x 100
Subtract the new number by the original number
770 - 426 = 344
344 ÷ 426 = 0.8075117370892019
0.8075117370892019 x 100 = 80.75%