254.64% is the change from 280 to 993
Calculation steps:
[( 993 - 280 ) ÷ 280] x 100 = 254.64%
Formula
Percentage change = [(993 - 280) / 280] x 100
Subtract the new number by the original number
993 - 280 = 713
713 ÷ 280 = 2.5464285714285713
2.5464285714285713 x 100 = 254.64%