-79.45% is the change from 915 to 188
Calculation steps:
[( 188 - 915 ) ÷ 915] x 100 = -79.45%
Formula
Percentage change = [(188 - 915) / 915] x 100
Subtract the new number by the original number
188 - 915 = -727
-727 ÷ 915 = -0.7945355191256831
-0.7945355191256831 x 100 = -79.45%