-92.58% is the change from 310 to 23
Calculation steps:
[( 23 - 310 ) ÷ 310] x 100 = -92.58%
Formula
Percentage change = [(23 - 310) / 310] x 100
Subtract the new number by the original number
23 - 310 = -287
-287 ÷ 310 = -0.9258064516129032
-0.9258064516129032 x 100 = -92.58%