-3.26% is the change from 951 to 920
Calculation steps:
[( 920 - 951 ) ÷ 951] x 100 = -3.26%
Formula
Percentage change = [(920 - 951) / 951] x 100
Subtract the new number by the original number
920 - 951 = -31
-31 ÷ 951 = -0.03259726603575184
-0.03259726603575184 x 100 = -3.26%