-85.71% is the change from 147 to 21
Calculation steps:
[( 21 - 147 ) ÷ 147] x 100 = -85.71%
Formula
Percentage change = [(21 - 147) / 147] x 100
Subtract the new number by the original number
21 - 147 = -126
-126 ÷ 147 = -0.8571428571428571
-0.8571428571428571 x 100 = -85.71%