-69.78% is the change from 910 to 275
Calculation steps:
[( 275 - 910 ) ÷ 910] x 100 = -69.78%
Formula
Percentage change = [(275 - 910) / 910] x 100
Subtract the new number by the original number
275 - 910 = -635
-635 ÷ 910 = -0.6978021978021978
-0.6978021978021978 x 100 = -69.78%