1270% is the change from 20 to 274
Calculation steps:
[( 274 - 20 ) ÷ 20] x 100 = 1270%
Formula
Percentage change = [(274 - 20) / 20] x 100
Subtract the new number by the original number
274 - 20 = 254
254 ÷ 20 = 12.7
12.7 x 100 = 1270%
Example