119.64% is the change from 280 to 615
Calculation steps:
[( 615 - 280 ) ÷ 280] x 100 = 119.64%
Formula
Percentage change = [(615 - 280) / 280] x 100
Subtract the new number by the original number
615 - 280 = 335
335 ÷ 280 = 1.1964285714285714
1.1964285714285714 x 100 = 119.64%