-8.12% is the change from 690 to 634
Calculation steps:
[( 634 - 690 ) ÷ 690] x 100 = -8.12%
Formula
Percentage change = [(634 - 690) / 690] x 100
Subtract the new number by the original number
634 - 690 = -56
-56 ÷ 690 = -0.08115942028985507
-0.08115942028985507 x 100 = -8.12%