-81.74% is the change from 690 to 126
Calculation steps:
[( 126 - 690 ) ÷ 690] x 100 = -81.74%
Formula
Percentage change = [(126 - 690) / 690] x 100
Subtract the new number by the original number
126 - 690 = -564
-564 ÷ 690 = -0.8173913043478261
-0.8173913043478261 x 100 = -81.74%