2275% is the change from 28 to 665
Calculation steps:
[( 665 - 28 ) ÷ 28] x 100 = 2275%
Formula
Percentage change = [(665 - 28) / 28] x 100
Subtract the new number by the original number
665 - 28 = 637
637 ÷ 28 = 22.75
22.75 x 100 = 2275%
Example