-45.04% is the change from 766 to 421
Calculation steps:
[( 421 - 766 ) ÷ 766] x 100 = -45.04%
Formula
Percentage change = [(421 - 766) / 766] x 100
Subtract the new number by the original number
421 - 766 = -345
-345 ÷ 766 = -0.45039164490861616
-0.45039164490861616 x 100 = -45.04%