-72.83% is the change from 611 to 166
Calculation steps:
[( 166 - 611 ) ÷ 611] x 100 = -72.83%
Formula
Percentage change = [(166 - 611) / 611] x 100
Subtract the new number by the original number
166 - 611 = -445
-445 ÷ 611 = -0.7283142389525368
-0.7283142389525368 x 100 = -72.83%