-0.47% is the change from 211 to 210
Calculation steps:
[( 210 - 211 ) ÷ 211] x 100 = -0.47%
Formula
Percentage change = [(210 - 211) / 211] x 100
Subtract the new number by the original number
210 - 211 = -1
-1 ÷ 211 = -0.004739336492890996
-0.004739336492890996 x 100 = -0.47%