173.21% is the change from 280 to 765
Calculation steps:
[( 765 - 280 ) ÷ 280] x 100 = 173.21%
Formula
Percentage change = [(765 - 280) / 280] x 100
Subtract the new number by the original number
765 - 280 = 485
485 ÷ 280 = 1.7321428571428572
1.7321428571428572 x 100 = 173.21%