302.9% is the change from 69 to 278
Calculation steps:
[( 278 - 69 ) ÷ 69] x 100 = 302.9%
Formula
Percentage change = [(278 - 69) / 69] x 100
Subtract the new number by the original number
278 - 69 = 209
209 ÷ 69 = 3.028985507246377
3.028985507246377 x 100 = 302.9%