81.97% is the change from 427 to 777
Calculation steps:
[( 777 - 427 ) ÷ 427] x 100 = 81.97%
Formula
Percentage change = [(777 - 427) / 427] x 100
Subtract the new number by the original number
777 - 427 = 350
350 ÷ 427 = 0.819672131147541
0.819672131147541 x 100 = 81.97%