-5.25% is the change from 914 to 866
Calculation steps:
[( 866 - 914 ) ÷ 914] x 100 = -5.25%
Formula
Percentage change = [(866 - 914) / 914] x 100
Subtract the new number by the original number
866 - 914 = -48
-48 ÷ 914 = -0.0525164113785558
-0.0525164113785558 x 100 = -5.25%