-35.97% is the change from 620 to 397
Calculation steps:
[( 397 - 620 ) ÷ 620] x 100 = -35.97%
Formula
Percentage change = [(397 - 620) / 620] x 100
Subtract the new number by the original number
397 - 620 = -223
-223 ÷ 620 = -0.3596774193548387
-0.3596774193548387 x 100 = -35.97%