-89.43% is the change from 672 to 71
Calculation steps:
[( 71 - 672 ) ÷ 672] x 100 = -89.43%
Formula
Percentage change = [(71 - 672) / 672] x 100
Subtract the new number by the original number
71 - 672 = -601
-601 ÷ 672 = -0.8943452380952381
-0.8943452380952381 x 100 = -89.43%