-97.91% is the change from 910 to 19
Calculation steps:
[( 19 - 910 ) ÷ 910] x 100 = -97.91%
Formula
Percentage change = [(19 - 910) / 910] x 100
Subtract the new number by the original number
19 - 910 = -891
-891 ÷ 910 = -0.9791208791208791
-0.9791208791208791 x 100 = -97.91%