-2.19% is the change from 959 to 938
Calculation steps:
[( 938 - 959 ) ÷ 959] x 100 = -2.19%
Formula
Percentage change = [(938 - 959) / 959] x 100
Subtract the new number by the original number
938 - 959 = -21
-21 ÷ 959 = -0.021897810218978103
-0.021897810218978103 x 100 = -2.19%