psutil not displaying correct CPU usage

Question

Here is my code:

import psutil
import time


while True:
    cpu_usage = psutil.cpu_percent()
    ram_usage = psutil.virtual_memory().percent
    # gpu_usage = psutil.gpu_percent()

    print("CPU Usage: ", cpu_usage,"RAM Usage: ", ram_usage)
    time.sleep(2)
    #print("RAM Usage:", ram_usage)

The problem is when I run the code CPU usage displayed from the code is not equal to task manager.