428.57% is the change from 189 to 999
Calculation steps:
[( 999 - 189 ) ÷ 189] x 100 = 428.57%
Formula
Percentage change = [(999 - 189) / 189] x 100
Subtract the new number by the original number
999 - 189 = 810
810 ÷ 189 = 4.285714285714286
4.285714285714286 x 100 = 428.57%