-79.37% is the change from 824 to 170
Calculation steps:
[( 170 - 824 ) ÷ 824] x 100 = -79.37%
Formula
Percentage change = [(170 - 824) / 824] x 100
Subtract the new number by the original number
170 - 824 = -654
-654 ÷ 824 = -0.7936893203883495
-0.7936893203883495 x 100 = -79.37%