-98% is the change from 950 to 19
Calculation steps:
[( 19 - 950 ) ÷ 950] x 100 = -98%
Formula
Percentage change = [(19 - 950) / 950] x 100
Subtract the new number by the original number
19 - 950 = -931
-931 ÷ 950 = -0.98
-0.98 x 100 = -98%
Example