-66.09% is the change from 690 to 234
Calculation steps:
[( 234 - 690 ) ÷ 690] x 100 = -66.09%
Formula
Percentage change = [(234 - 690) / 690] x 100
Subtract the new number by the original number
234 - 690 = -456
-456 ÷ 690 = -0.6608695652173913
-0.6608695652173913 x 100 = -66.09%