-19.95% is the change from 827 to 662
Calculation steps:
[( 662 - 827 ) ÷ 827] x 100 = -19.95%
Formula
Percentage change = [(662 - 827) / 827] x 100
Subtract the new number by the original number
662 - 827 = -165
-165 ÷ 827 = -0.19951632406287786
-0.19951632406287786 x 100 = -19.95%