662.5% is the change from 128 to 976
Calculation steps:
[( 976 - 128 ) ÷ 128] x 100 = 662.5%
Formula
Percentage change = [(976 - 128) / 128] x 100
Subtract the new number by the original number
976 - 128 = 848
848 ÷ 128 = 6.625
6.625 x 100 = 662.5%
Example