102% is the change from 50 to 101
Calculation steps:
[( 101 - 50 ) ÷ 50] x 100 = 102%
Formula
Percentage change = [(101 - 50) / 50] x 100
Subtract the new number by the original number
101 - 50 = 51
51 ÷ 50 = 1.02
1.02 x 100 = 102%
Example