-78.49% is the change from 623 to 134
Calculation steps:
[( 134 - 623 ) ÷ 623] x 100 = -78.49%
Formula
Percentage change = [(134 - 623) / 623] x 100
Subtract the new number by the original number
134 - 623 = -489
-489 ÷ 623 = -0.7849117174959872
-0.7849117174959872 x 100 = -78.49%