-77.45% is the change from 102 to 23
Calculation steps:
[( 23 - 102 ) ÷ 102] x 100 = -77.45%
Formula
Percentage change = [(23 - 102) / 102] x 100
Subtract the new number by the original number
23 - 102 = -79
-79 ÷ 102 = -0.7745098039215687
-0.7745098039215687 x 100 = -77.45%