280% is the change from 245 to 931
Calculation steps:
[( 931 - 245 ) ÷ 245] x 100 = 280%
Formula
Percentage change = [(931 - 245) / 245] x 100
Subtract the new number by the original number
931 - 245 = 686
686 ÷ 245 = 2.8
2.8 x 100 = 280%
Example