-21.64% is the change from 268 to 210
Calculation steps:
[( 210 - 268 ) ÷ 268] x 100 = -21.64%
Formula
Percentage change = [(210 - 268) / 268] x 100
Subtract the new number by the original number
210 - 268 = -58
-58 ÷ 268 = -0.21641791044776118
-0.21641791044776118 x 100 = -21.64%