-83.41% is the change from 657 to 109
Calculation steps:
[( 109 - 657 ) ÷ 657] x 100 = -83.41%
Formula
Percentage change = [(109 - 657) / 657] x 100
Subtract the new number by the original number
109 - 657 = -548
-548 ÷ 657 = -0.8340943683409436
-0.8340943683409436 x 100 = -83.41%