-80.41% is the change from 97 to 19
Calculation steps:
[( 19 - 97 ) ÷ 97] x 100 = -80.41%
Formula
Percentage change = [(19 - 97) / 97] x 100
Subtract the new number by the original number
19 - 97 = -78
-78 ÷ 97 = -0.8041237113402062
-0.8041237113402062 x 100 = -80.41%