3750% is the change from 2 to 77
Calculation steps:
[( 77 - 2 ) ÷ 2] x 100 = 3750%
Formula
Percentage change = [(77 - 2) / 2] x 100
Subtract the new number by the original number
77 - 2 = 75
75 ÷ 2 = 37.5
37.5 x 100 = 3750%
Example