259.26% is the change from 270 to 970
Calculation steps:
[( 970 - 270 ) ÷ 270] x 100 = 259.26%
Formula
Percentage change = [(970 - 270) / 270] x 100
Subtract the new number by the original number
970 - 270 = 700
700 ÷ 270 = 2.5925925925925926
2.5925925925925926 x 100 = 259.26%