305.8% is the change from 69 to 280
Calculation steps:
[( 280 - 69 ) ÷ 69] x 100 = 305.8%
Formula
Percentage change = [(280 - 69) / 69] x 100
Subtract the new number by the original number
280 - 69 = 211
211 ÷ 69 = 3.0579710144927534
3.0579710144927534 x 100 = 305.8%