2310% is the change from 40 to 964
Calculation steps:
[( 964 - 40 ) ÷ 40] x 100 = 2310%
Formula
Percentage change = [(964 - 40) / 40] x 100
Subtract the new number by the original number
964 - 40 = 924
924 ÷ 40 = 23.1
23.1 x 100 = 2310%
Example