3462.5% is the change from 8 to 285
Calculation steps:
[( 285 - 8 ) ÷ 8] x 100 = 3462.5%
Formula
Percentage change = [(285 - 8) / 8] x 100
Subtract the new number by the original number
285 - 8 = 277
277 ÷ 8 = 34.625
34.625 x 100 = 3462.5%
Example