-31.26% is the change from 902 to 620
Calculation steps:
[( 620 - 902 ) ÷ 902] x 100 = -31.26%
Formula
Percentage change = [(620 - 902) / 902] x 100
Subtract the new number by the original number
620 - 902 = -282
-282 ÷ 902 = -0.31263858093126384
-0.31263858093126384 x 100 = -31.26%