-76.4% is the change from 623 to 147
Calculation steps:
[( 147 - 623 ) ÷ 623] x 100 = -76.4%
Formula
Percentage change = [(147 - 623) / 623] x 100
Subtract the new number by the original number
147 - 623 = -476
-476 ÷ 623 = -0.7640449438202247
-0.7640449438202247 x 100 = -76.4%