-56.69% is the change from 972 to 421
Calculation steps:
[( 421 - 972 ) ÷ 972] x 100 = -56.69%
Formula
Percentage change = [(421 - 972) / 972] x 100
Subtract the new number by the original number
421 - 972 = -551
-551 ÷ 972 = -0.5668724279835391
-0.5668724279835391 x 100 = -56.69%