-80.7% is the change from 917 to 177
Calculation steps:
[( 177 - 917 ) ÷ 917] x 100 = -80.7%
Formula
Percentage change = [(177 - 917) / 917] x 100
Subtract the new number by the original number
177 - 917 = -740
-740 ÷ 917 = -0.806979280261723
-0.806979280261723 x 100 = -80.7%