-73.18% is the change from 619 to 166
Calculation steps:
[( 166 - 619 ) ÷ 619] x 100 = -73.18%
Formula
Percentage change = [(166 - 619) / 619] x 100
Subtract the new number by the original number
166 - 619 = -453
-453 ÷ 619 = -0.7318255250403877
-0.7318255250403877 x 100 = -73.18%