4900% is the change from 1 to 50
Calculation steps:
[( 50 - 1 ) ÷ 1] x 100 = 4900%
Formula
Percentage change = [(50 - 1) / 1] x 100
Subtract the new number by the original number
50 - 1 = 49
49 ÷ 1 = 49
49 x 100 = 4900%
Example