-83.83% is the change from 915 to 148
Calculation steps:
[( 148 - 915 ) ÷ 915] x 100 = -83.83%
Formula
Percentage change = [(148 - 915) / 915] x 100
Subtract the new number by the original number
148 - 915 = -767
-767 ÷ 915 = -0.8382513661202186
-0.8382513661202186 x 100 = -83.83%