70.18% is the change from 456 to 776
Calculation steps:
[( 776 - 456 ) ÷ 456] x 100 = 70.18%
Formula
Percentage change = [(776 - 456) / 456] x 100
Subtract the new number by the original number
776 - 456 = 320
320 ÷ 456 = 0.7017543859649122
0.7017543859649122 x 100 = 70.18%