-77.33% is the change from 397 to 90
Calculation steps:
[( 90 - 397 ) ÷ 397] x 100 = -77.33%
Formula
Percentage change = [(90 - 397) / 397] x 100
Subtract the new number by the original number
90 - 397 = -307
-307 ÷ 397 = -0.7732997481108312
-0.7732997481108312 x 100 = -77.33%