-7.83% is the change from 690 to 636
Calculation steps:
[( 636 - 690 ) ÷ 690] x 100 = -7.83%
Formula
Percentage change = [(636 - 690) / 690] x 100
Subtract the new number by the original number
636 - 690 = -54
-54 ÷ 690 = -0.0782608695652174
-0.0782608695652174 x 100 = -7.83%