-94.64% is the change from 915 to 49
Calculation steps:
[( 49 - 915 ) ÷ 915] x 100 = -94.64%
Formula
Percentage change = [(49 - 915) / 915] x 100
Subtract the new number by the original number
49 - 915 = -866
-866 ÷ 915 = -0.946448087431694
-0.946448087431694 x 100 = -94.64%