-94.74% is the change from 19 to 1
Calculation steps:
[( 1 - 19 ) ÷ 19] x 100 = -94.74%
Formula
Percentage change = [(1 - 19) / 19] x 100
Subtract the new number by the original number
1 - 19 = -18
-18 ÷ 19 = -0.9473684210526315
-0.9473684210526315 x 100 = -94.74%