-9.71% is the change from 690 to 623
Calculation steps:
[( 623 - 690 ) ÷ 690] x 100 = -9.71%
Formula
Percentage change = [(623 - 690) / 690] x 100
Subtract the new number by the original number
623 - 690 = -67
-67 ÷ 690 = -0.09710144927536232
-0.09710144927536232 x 100 = -9.71%