-76.36% is the change from 423 to 100
Calculation steps:
[( 100 - 423 ) ÷ 423] x 100 = -76.36%
Formula
Percentage change = [(100 - 423) / 423] x 100
Subtract the new number by the original number
100 - 423 = -323
-323 ÷ 423 = -0.7635933806146572
-0.7635933806146572 x 100 = -76.36%