-70.23% is the change from 917 to 273
Calculation steps:
[( 273 - 917 ) ÷ 917] x 100 = -70.23%
Formula
Percentage change = [(273 - 917) / 917] x 100
Subtract the new number by the original number
273 - 917 = -644
-644 ÷ 917 = -0.7022900763358778
-0.7022900763358778 x 100 = -70.23%