-72.22% is the change from 612 to 170
Calculation steps:
[( 170 - 612 ) ÷ 612] x 100 = -72.22%
Formula
Percentage change = [(170 - 612) / 612] x 100
Subtract the new number by the original number
170 - 612 = -442
-442 ÷ 612 = -0.7222222222222222
-0.7222222222222222 x 100 = -72.22%