-97.85% is the change from 697 to 15
Calculation steps:
[( 15 - 697 ) ÷ 697] x 100 = -97.85%
Formula
Percentage change = [(15 - 697) / 697] x 100
Subtract the new number by the original number
15 - 697 = -682
-682 ÷ 697 = -0.9784791965566715
-0.9784791965566715 x 100 = -97.85%