-72.18% is the change from 611 to 170
Calculation steps:
[( 170 - 611 ) ÷ 611] x 100 = -72.18%
Formula
Percentage change = [(170 - 611) / 611] x 100
Subtract the new number by the original number
170 - 611 = -441
-441 ÷ 611 = -0.7217675941080196
-0.7217675941080196 x 100 = -72.18%