-72.63% is the change from 917 to 251
Calculation steps:
[( 251 - 917 ) ÷ 917] x 100 = -72.63%
Formula
Percentage change = [(251 - 917) / 917] x 100
Subtract the new number by the original number
251 - 917 = -666
-666 ÷ 917 = -0.7262813522355507
-0.7262813522355507 x 100 = -72.63%