-89.47% is the change from 19 to 2
Calculation steps:
[( 2 - 19 ) ÷ 19] x 100 = -89.47%
Formula
Percentage change = [(2 - 19) / 19] x 100
Subtract the new number by the original number
2 - 19 = -17
-17 ÷ 19 = -0.8947368421052632
-0.8947368421052632 x 100 = -89.47%