-86.2% is the change from 623 to 86
Calculation steps:
[( 86 - 623 ) ÷ 623] x 100 = -86.2%
Formula
Percentage change = [(86 - 623) / 623] x 100
Subtract the new number by the original number
86 - 623 = -537
-537 ÷ 623 = -0.8619582664526485
-0.8619582664526485 x 100 = -86.2%