-97.25% is the change from 835 to 23
Calculation steps:
[( 23 - 835 ) ÷ 835] x 100 = -97.25%
Formula
Percentage change = [(23 - 835) / 835] x 100
Subtract the new number by the original number
23 - 835 = -812
-812 ÷ 835 = -0.9724550898203593
-0.9724550898203593 x 100 = -97.25%