243.21% is the change from 280 to 961
Calculation steps:
[( 961 - 280 ) ÷ 280] x 100 = 243.21%
Formula
Percentage change = [(961 - 280) / 280] x 100
Subtract the new number by the original number
961 - 280 = 681
681 ÷ 280 = 2.432142857142857
2.432142857142857 x 100 = 243.21%