-73.2% is the change from 612 to 164
Calculation steps:
[( 164 - 612 ) ÷ 612] x 100 = -73.2%
Formula
Percentage change = [(164 - 612) / 612] x 100
Subtract the new number by the original number
164 - 612 = -448
-448 ÷ 612 = -0.7320261437908496
-0.7320261437908496 x 100 = -73.2%