-97.93% is the change from 917 to 19
Calculation steps:
[( 19 - 917 ) ÷ 917] x 100 = -97.93%
Formula
Percentage change = [(19 - 917) / 917] x 100
Subtract the new number by the original number
19 - 917 = -898
-898 ÷ 917 = -0.9792802617230099
-0.9792802617230099 x 100 = -97.93%