-75.95% is the change from 79 to 19
Calculation steps:
[( 19 - 79 ) ÷ 79] x 100 = -75.95%
Formula
Percentage change = [(19 - 79) / 79] x 100
Subtract the new number by the original number
19 - 79 = -60
-60 ÷ 79 = -0.759493670886076
-0.759493670886076 x 100 = -75.95%