1250% is the change from 6 to 81
Calculation steps:
[( 81 - 6 ) ÷ 6] x 100 = 1250%
Formula
Percentage change = [(81 - 6) / 6] x 100
Subtract the new number by the original number
81 - 6 = 75
75 ÷ 6 = 12.5
12.5 x 100 = 1250%
Example