280% is the change from 260 to 988
Calculation steps:
[( 988 - 260 ) ÷ 260] x 100 = 280%
Formula
Percentage change = [(988 - 260) / 260] x 100
Subtract the new number by the original number
988 - 260 = 728
728 ÷ 260 = 2.8
2.8 x 100 = 280%
Example