-73.24% is the change from 71 to 19
Calculation steps:
[( 19 - 71 ) ÷ 71] x 100 = -73.24%
Formula
Percentage change = [(19 - 71) / 71] x 100
Subtract the new number by the original number
19 - 71 = -52
-52 ÷ 71 = -0.7323943661971831
-0.7323943661971831 x 100 = -73.24%