70.02% is the change from 457 to 777
Calculation steps:
[( 777 - 457 ) ÷ 457] x 100 = 70.02%
Formula
Percentage change = [(777 - 457) / 457] x 100
Subtract the new number by the original number
777 - 457 = 320
320 ÷ 457 = 0.700218818380744
0.700218818380744 x 100 = 70.02%