-14.97% is the change from 815 to 693
Calculation steps:
[( 693 - 815 ) ÷ 815] x 100 = -14.97%
Formula
Percentage change = [(693 - 815) / 815] x 100
Subtract the new number by the original number
693 - 815 = -122
-122 ÷ 815 = -0.14969325153374233
-0.14969325153374233 x 100 = -14.97%