100% is the change from 67 to 134
Calculation steps:
[( 134 - 67 ) ÷ 67] x 100 = 100%
Formula
Percentage change = [(134 - 67) / 67] x 100
Subtract the new number by the original number
134 - 67 = 67
67 ÷ 67 = 1
1 x 100 = 100%
Example