-20.41% is the change from 828 to 659
Calculation steps:
[( 659 - 828 ) ÷ 828] x 100 = -20.41%
Formula
Percentage change = [(659 - 828) / 828] x 100
Subtract the new number by the original number
659 - 828 = -169
-169 ÷ 828 = -0.2041062801932367
-0.2041062801932367 x 100 = -20.41%