-78.39% is the change from 620 to 134
Calculation steps:
[( 134 - 620 ) ÷ 620] x 100 = -78.39%
Formula
Percentage change = [(134 - 620) / 620] x 100
Subtract the new number by the original number
134 - 620 = -486
-486 ÷ 620 = -0.7838709677419354
-0.7838709677419354 x 100 = -78.39%