-2.21% is the change from 768 to 751
Calculation steps:
[( 751 - 768 ) ÷ 768] x 100 = -2.21%
Formula
Percentage change = [(751 - 768) / 768] x 100
Subtract the new number by the original number
751 - 768 = -17
-17 ÷ 768 = -0.022135416666666668
-0.022135416666666668 x 100 = -2.21%