-82.39% is the change from 619 to 109
Calculation steps:
[( 109 - 619 ) ÷ 619] x 100 = -82.39%
Formula
Percentage change = [(109 - 619) / 619] x 100
Subtract the new number by the original number
109 - 619 = -510
-510 ÷ 619 = -0.8239095315024233
-0.8239095315024233 x 100 = -82.39%