268.42% is the change from 209 to 770
Calculation steps:
[( 770 - 209 ) ÷ 209] x 100 = 268.42%
Formula
Percentage change = [(770 - 209) / 209] x 100
Subtract the new number by the original number
770 - 209 = 561
561 ÷ 209 = 2.6842105263157894
2.6842105263157894 x 100 = 268.42%