50% is the change from 396 to 594
Calculation steps:
[( 594 - 396 ) ÷ 396] x 100 = 50%
Formula
Percentage change = [(594 - 396) / 396] x 100
Subtract the new number by the original number
594 - 396 = 198
198 ÷ 396 = 0.5
0.5 x 100 = 50%
Example