5000% is the change from 5 to 255
Calculation steps:
[( 255 - 5 ) ÷ 5] x 100 = 5000%
Formula
Percentage change = [(255 - 5) / 5] x 100
Subtract the new number by the original number
255 - 5 = 250
250 ÷ 5 = 50
50 x 100 = 5000%
Example