-82.66% is the change from 917 to 159
Calculation steps:
[( 159 - 917 ) ÷ 917] x 100 = -82.66%
Formula
Percentage change = [(159 - 917) / 917] x 100
Subtract the new number by the original number
159 - 917 = -758
-758 ÷ 917 = -0.826608505997819
-0.826608505997819 x 100 = -82.66%