-0.66% is the change from 906 to 900
Calculation steps:
[( 900 - 906 ) ÷ 906] x 100 = -0.66%
Formula
Percentage change = [(900 - 906) / 906] x 100
Subtract the new number by the original number
900 - 906 = -6
-6 ÷ 906 = -0.006622516556291391
-0.006622516556291391 x 100 = -0.66%