127.5% is the change from 320 to 728
Calculation steps:
[( 728 - 320 ) ÷ 320] x 100 = 127.5%
Formula
Percentage change = [(728 - 320) / 320] x 100
Subtract the new number by the original number
728 - 320 = 408
408 ÷ 320 = 1.275
1.275 x 100 = 127.5%
Example