-3.33% is the change from 931 to 900
Calculation steps:
[( 900 - 931 ) ÷ 931] x 100 = -3.33%
Formula
Percentage change = [(900 - 931) / 931] x 100
Subtract the new number by the original number
900 - 931 = -31
-31 ÷ 931 = -0.03329752953813104
-0.03329752953813104 x 100 = -3.33%