-70.45% is the change from 917 to 271
Calculation steps:
[( 271 - 917 ) ÷ 917] x 100 = -70.45%
Formula
Percentage change = [(271 - 917) / 917] x 100
Subtract the new number by the original number
271 - 917 = -646
-646 ÷ 917 = -0.7044711014176663
-0.7044711014176663 x 100 = -70.45%