-66.14% is the change from 502 to 170
Calculation steps:
[( 170 - 502 ) ÷ 502] x 100 = -66.14%
Formula
Percentage change = [(170 - 502) / 502] x 100
Subtract the new number by the original number
170 - 502 = -332
-332 ÷ 502 = -0.6613545816733067
-0.6613545816733067 x 100 = -66.14%