197.3% is the change from 259 to 770
Calculation steps:
[( 770 - 259 ) ÷ 259] x 100 = 197.3%
Formula
Percentage change = [(770 - 259) / 259] x 100
Subtract the new number by the original number
770 - 259 = 511
511 ÷ 259 = 1.972972972972973
1.972972972972973 x 100 = 197.3%