-79.45% is the change from 837 to 172
Calculation steps:
[( 172 - 837 ) ÷ 837] x 100 = -79.45%
Formula
Percentage change = [(172 - 837) / 837] x 100
Subtract the new number by the original number
172 - 837 = -665
-665 ÷ 837 = -0.7945041816009558
-0.7945041816009558 x 100 = -79.45%