-45.18% is the change from 768 to 421
Calculation steps:
[( 421 - 768 ) ÷ 768] x 100 = -45.18%
Formula
Percentage change = [(421 - 768) / 768] x 100
Subtract the new number by the original number
421 - 768 = -347
-347 ÷ 768 = -0.4518229166666667
-0.4518229166666667 x 100 = -45.18%