252.5% is the change from 280 to 987
Calculation steps:
[( 987 - 280 ) ÷ 280] x 100 = 252.5%
Formula
Percentage change = [(987 - 280) / 280] x 100
Subtract the new number by the original number
987 - 280 = 707
707 ÷ 280 = 2.525
2.525 x 100 = 252.5%
Example