69.87% is the change from 478 to 812
Calculation steps:
[( 812 - 478 ) ÷ 478] x 100 = 69.87%
Formula
Percentage change = [(812 - 478) / 478] x 100
Subtract the new number by the original number
812 - 478 = 334
334 ÷ 478 = 0.698744769874477
0.698744769874477 x 100 = 69.87%