-47.15% is the change from 999 to 528
Calculation steps:
[( 528 - 999 ) ÷ 999] x 100 = -47.15%
Formula
Percentage change = [(528 - 999) / 999] x 100
Subtract the new number by the original number
528 - 999 = -471
-471 ÷ 999 = -0.47147147147147145
-0.47147147147147145 x 100 = -47.15%