100% is the change from 189 to 378
Calculation steps:
[( 378 - 189 ) ÷ 189] x 100 = 100%
Formula
Percentage change = [(378 - 189) / 189] x 100
Subtract the new number by the original number
378 - 189 = 189
189 ÷ 189 = 1
1 x 100 = 100%
Example