70.92% is the change from 447 to 764
Calculation steps:
[( 764 - 447 ) ÷ 447] x 100 = 70.92%
Formula
Percentage change = [(764 - 447) / 447] x 100
Subtract the new number by the original number
764 - 447 = 317
317 ÷ 447 = 0.70917225950783
0.70917225950783 x 100 = 70.92%