-98.2% is the change from 832 to 15
Calculation steps:
[( 15 - 832 ) ÷ 832] x 100 = -98.2%
Formula
Percentage change = [(15 - 832) / 832] x 100
Subtract the new number by the original number
15 - 832 = -817
-817 ÷ 832 = -0.9819711538461539
-0.9819711538461539 x 100 = -98.2%