-0.21% is the change from 961 to 959
Calculation steps:
[( 959 - 961 ) ÷ 961] x 100 = -0.21%
Formula
Percentage change = [(959 - 961) / 961] x 100
Subtract the new number by the original number
959 - 961 = -2
-2 ÷ 961 = -0.002081165452653486
-0.002081165452653486 x 100 = -0.21%