-98.08% is the change from 781 to 15
Calculation steps:
[( 15 - 781 ) ÷ 781] x 100 = -98.08%
Formula
Percentage change = [(15 - 781) / 781] x 100
Subtract the new number by the original number
15 - 781 = -766
-766 ÷ 781 = -0.9807938540332907
-0.9807938540332907 x 100 = -98.08%