1300% is the change from 70 to 980
Calculation steps:
[( 980 - 70 ) ÷ 70] x 100 = 1300%
Formula
Percentage change = [(980 - 70) / 70] x 100
Subtract the new number by the original number
980 - 70 = 910
910 ÷ 70 = 13
13 x 100 = 1300%
Example